Shock absorber



FIG. 1 is a perspective view of a shock absorber showing our new design in use;

FIG. 2 is a perspective view thereof in an alternate position of use;

FIG. 3 is a front elevation view of a shock absorber showing our new design;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a rear elevation view thereof

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken line objects in FIGS. 1, and 2, form no part of the invention. 

The ornamental design for a shock absorber, as shown and described. 